Hairpin



Nov. 23, 1937.

E. D. DAVIS HAIRPIN Original Filed May 20, 1936 Zdwar JJQWZLS,

kyZZ 05w Patented Nov. 23, 1937 UNITED STATES HAIRPIN Edward D. Davis, Chicago, Ill., assignor to The Boye Needle Company, Chicago, 111., a corporation of Illinois Application May 20, 1936, Serial No. 80,899 Renewed July 28, 1937 11 Claims.

This invention relates to a hairpin.

An object of the invention is to provide a hairpin so shaped as to: greatly diminish the visibility of the hairpin. A further object is to provide a hairpin provided throughout with lateral notches or crimps which cause the pin to remain in position in the hair. A further object is to provide a laterally-crimped hairpin with roughened interior surfaces. A still further object is to provide a clip hairpin having notches or crimps in its legs, the crimps or notches being vertically aligned. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in preferred embodiments, by the accompanying drawing, in which- Fig. 1 is a plan view of a pin embodying my invention; Fig. 2, a side View in elevation; Fig. 3, a plan sectional view, the section being taken as indicated at line 3 of Fig. 2; Fig. 4, a plan view of a modified form of pin; and Fig. 5, a view similar to Fig. 3 of a hairpin, the inner surface of the head being provided with superficial roughening.

In the illustration given in Figs. 1, 2 and 3, l0 and II designate the upper and lower legs of a clip hairpin, the legs being connected by an integral bend I2. The inner surfaces of one or both legs are superficially roughened, as indicated by the numeral IS. The legs and bend I2 are provided with inwardly extending notches or indentations l l. Such notches I4 form laterally extending projections or crimps I5.

The legs Ill and II are preferably of uniform pliability or strength, so that when it is desired, the legs may be spread apart to form the normal type of hairpin shown in Fig. 4. This hairpin is, however, characterized by the fact that it has flat legs I0 and II, which are provided interiorly with roughening I3. This hairpin is further new, in that it has lateral crimps or notches extending along its sides and bend or head.

For many years, it has been known that one of the largest defects of the modern clip hairpin lies in the fact that its head or integral bend has to be prominently and obtrusively displayed. When the hairpin is applied, it is concealed to a substantial extent, except as to the bend or head. This portion of the pin is practically always in full view and its plain fiat or round shape renders it sharply conspicuous.

I have found that the above. defect can be substantially overcome by providing a hairpin with lateral crimps or notches running not only along the legs of the pin, but also along the bend or head. This structure permits less metal stock to be used, with the result that a substantially thin pin is made stifi enough to serve, while at the same time the lateral crimps tend to make the head orbend less visible. I have further found that a more extensive gripping surface is afforded by the lateral crimps when they are provided with superficial roughening. The roughened clamping surfaces cooperate with the notches to hold strands of hair securely within the pin.

In the modification shown in Fig. 4, the construction is substantially identical with that shown in Fig. 1, except that the lateral notches or crimps are omitted from the head IP. 15

The pins, as heretofore described, may be formed either from fiat metal strips or from. round wire. If desired, the notches may be formed by cutting away metal from the sides of the pin. Also, if desired, the notches may be formed by starting with a round wire, bending the wire laterally to form crimps, and then flattening the entire strip, or the. desired portion thereof, to the shape shown in the figures. While, if desired, the notches of the two legs need not be brought into alignment, I prefer to have the notches in alignment, in order to increase their effectiveness for locking the pin in the hair.

The ends of the pins may be slightly spread apart to facilitate the opening and spreading of the pin.

The superficial roughening or knurling on the inner surfaces of the pin may be formed as set out in my Patent No. 1,848,771, March 8, 1932. I have found, however, that the roughening is considerably more effective when lateral crimps are employed because of the increase in gripping surface and because the roughened sufaces cooperate with the notches to lock the hair within the pin.

In the operation of the pin shown in Figs. 1 to 3, inclusive, the ends of the pin may be grasped to spread the legs apart and to permit their insertion in the hair. As the legs come together, the locks of hair are gripped between the legs. It is found that the strands of hair adjacent the notches I4 extend upwardly and downwardly about the notches and engage the crimps or shoulders I5.

In the modification shown in Fig. 5, I provide an ordinary hairpin with interior roughened surfaces extending not only along the legs but also about the head. Preferably this form of pin is provided with fiat legs and also with a flat head although other shapes may be employed. The

. the hair.

cooperate with the roughened surfaces toprovide superficial roughening tends to lock the head itself firmly within the'hair and prevents it from protruding.

The new pin has the extremely important advantage, in that it is substantially invisible in Furthermore, the lateral projections integral bend, said bend and at least one leg being providedwith lateral crirnps.

2. Ahairpin having two legsconnected by an integral bend, said bend being provided with lat eral crimps.

34A hairpin having two legs connected by an integral bend said bend and at least one leg being provided with lateral crimps, and said legs being maintained by said bend'normally in a contacting position.

4. A hairpin having two 'legs connected by an integral bend, said bend and at least one leg being provided with lateral crimps, and said legs by an integral bend, each of said legs having lateral notches formed in its side, the notches of one leg being aligned with the notches of the other leg.

7. A clip hairpin comprising two legs connected by an integral bend, each of said legs having lateral notches formed in its sides.

8. A clip hairpin comprising two legs connected by an integral bend, each of said legs having lateral notches formed in its sides, and at least one of said legs having its inner surface superficiall roughened.

.9. "A clip hairpin comprising two legs connected by an integral bend, each of said legs having portions of its side provided with inwardly extending notches, said legs being of uniform width throughout.

10. A clip hairpin comprisingtwolegs connected by an integral bend, said legs being provided with a series of pairs of alignednotches and being of substantially equal length.

11. -A hairpin comprising: two legs connected by an integral bend, said bend being provided with superficial roughening.

EDWARD D. DAVIS. 1 

